Journal
COMPUTERS & MATHEMATICS WITH APPLICATIONS
Volume 146, Issue -, Pages 12-21Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.camwa.2023.06.028
Keywords
Linearity preserving; Advection-diffusion; Unsteady; Residual distribution; LDA
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This study presents the developments of linearity preserving (LP) residual distribution (RD) schemes for unsteady hyperbolic and hyperbolic-parabolic equations. By modifying classic RD schemes such as LDA using an explicit time integration and utilizing a classical aerodynamics philosophy on the standard finite-element technique, the new approach achieves true LP even for unsteady advection-diffusion cases and addresses the limitations of previous analytical approaches.
The developments of linearity preserving (LP) residual distribution (RD) schemes for unsteady hyperbolic and hyperbolic-parabolic equations are presented. This is achieved by utilizing a classical aerodynamics philosophy on the standard finite-element technique to modify classic RD schemes such as LDA to be truly LP even for unsteady advection-diffusion cases using an explicit time integration. The new approach herein would also highlight what previous analytical approaches lacked.
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